Kostas Christodoulopoulos – Assistant Professor

Department of Informatics and Telecommunications
National and Kapodistrian University of Athens,  Panepistimioupoli, Ilisia, 157 84, Greece

Room: B19

Mail: kchristodou at di dot uoa dot gr

Tel: +30 210 727 5313

Σελίδα στα Ελληνικά Greek 

K. Christodoulopoulos is an assistant professor at the Department of Informatics and Telecommunications (DIT) of the National and Kapodistrian University of Athens (NKUA or UoA), Greece.

He holds a Diploma in Electrical and Computer Engineering (ECE) from the National Technical University of Athens (NTUA), Greece, the M.Sc in Advance Computing from Imperial College of London, U.K., and the Ph.D degree from the Department of Computer Engineering and Informatics (CEID), University of Patras (UoP), Greece. He worked as an adjunct assistant professor at CEID-UoP and as a senior researcher at Computer Technology Institute (CTI) Patras Greece, Trinity College Dublin Ireland, ECE-NTUA, and as a contractor for IBM Ireland. He also worked at Nokia Bell Labs in Stuttgart, Germany.

Main research interests

·         Computer and communication networks

·         Resource allocation and network optimization

·         Optical network architectures, Core, Metro, Access, Local Area Networks and Datacenters

·         Quality of Transmission (QoT) estimation in optical networks

·         Designing, planning and operating optical networks

·         Networks control, Software Defined Networking (SDN), Digital Twins

·         Optimization (integer, linear and convex), heuristic algorithms, Machine Learning (ML)

·         Passive Optical Networks (PON), deterministic and low latency

·         Performance evaluation of networks

 

Google Scholar page

Recent publications

Journal papers

  [J1]      T. Pfeiffer, P. Dom, S. Bidkar, F. Fredricx, K. Christodoulopoulos, R. Bonk, "PON going beyond FTTH", IEEE/OSA Journal of Optical Communications and Networking, 2022. Invited

  [J2]      W. Lautenschlaeger, F. Frick, K. Christodoulopoulos, T. Henke, "A Scalable Factory Backbone for Multiple Independent Time-Sensitive Networks", Elsevier Journal of Systems Architecture, 2021.

  [J3]      A. Mahajan, K. Christodoulopoulos, R. Martínez, R. Muñoz, S. Spadaro, "Impact of Multi-Vendor Transponders Performance on Design Margin in Optical Networks", IEEE Access 9, 2021.

  [J4]      F. Locatelli, K. Christodoulopoulos, M.S. Moreolo, J.M. Fabrega, L. Nadal, S. Spadaro, "Spectral processing techniques for efficient monitoring in optical networks”, IEEE/OSA Journal of Optical Communications and Networking 13 (7), 2021.

  [J5]      S. Bigo, N. Benzaoui, K. Christodoulopoulos, R. Miller, W. Lautenschlaeger, F. Frick, "Dynamic deterministic digital infrastructure for time-sensitive applications in factory floors", IEEE Journal of Selected Topics in Quantum Electronics, 2021. Invited

  [J6]      A. Mahajan, K. Christodoulopoulos, R. Martínez, R. Muñoz, S. Spadaro, "Quality of transmission estimator retraining for dynamic optimization in optical networks", IEEE/OSA Journal of Optical Communications and Networking 13 (4), 2021.

  [J7]      K. Tokas, G. Patronas, C. Spatharakis, P. Bakopoulos, A. Kyriakos, G Landi, E. Zahavi, K. Christodoulopoulos, M. Aziz, R. Pitwon, D. Gallico, D. Reisis, E. Varvarigos, H. Avramopoulos "End-to-End Real-Time Demonstration of the Slotted, SDN-Controlled NEPHELE Optical Datacenter Network", Photonics 7 (2), 2020.

  [J8]      A. Mahajan, K. Christodoulopoulos, R. Martínez, S. Spadaro, R. Muñoz, "Modeling EDFA gain ripple and filter penalties with machine learning for accurate QOT estimation", IEEE/OSA Journal of Lightwave Technology, 38 (9), 2616-2629, 2020.

  [J9]      F. Locatelli, K. Christodoulopoulos, M. Svaluto Morelo, J. M. Fabrega, S. Spadaro, “Machine Learning-Based in-band OSNR Estimation from Optical Spectra“, IEEE Photonic Technology Letters (PTL), 2019.

[J10]      K. Christodoulopoulos, C. Delezoide, N. Sambo, A. Kretsis, I. Sartzetakis, A. Sgambelluri, N. Argyris, G. Kanakis, P. Giardina, G. Bernini, D. Roccato, A. Percelsi, R. Morro, H. Avramopoulos, P. Castoldi, P. Layec, S. Bigo, “Toward efficient, reliable, and autonomous optical networks: the ORCHESTRA solution”, IEEE/OSA Journal of Optical Communications and Networking 2019. Invited

[J11]      I. Sartzetakis, K. Christodoulopoulos, E. Varvarigos, “Accurate quality of transmission estimation with machine learning”, IEEE/OSA, Journal of Optical Communications and Networking, 2019.

[J12]      N. Sambo, K. Christodoulopoulos, N. Argyris, P. Giardina, C. Delezoide, A. Sgambelluri, A. Kretsis, G. Kanakis, F. Fresi, G. Bernini, H. Avramopoulos, E. Varvarigos, P. Castoldi, “Experimental Demonstration of a Fully Disaggregated and Automated White Box Comprised of Different Types of Transponders and Monitors”, IEEE/OSA Journal of Lightwave Technology, 2019.

 

Conferences

[C1]      S. Bidkar, K. Christodoulopoulos, T. Pfeiffer, R. Bonk, “Evaluating Bandwidth Efficiency and Latency of Scheduling Schemes for 5G Fronthaul Over TDM-PON”, European Conference on Optical Communications (ECOC), 2022

[C2]      K. Christodoulopoulos, S. Bidkar, W. Lautenschlaeger, T. Pfeiffer, R. Bonk, "Demonstration of Industrial-grade Passive Optical Network", Optical Fiber Communication Conference (OFC), 2022

[C3]      A. Mahajan, K. Christodoulopoulos, R. Martínez, R. Muñoz, S. Spadaro, "Adaptive and iterative QoT estimator retraining for launch power optimization", Optical Fiber Communications Conference (OFC), 2021

[C4]      F. Locatelli, K. Christodoulopoulos, J.M. Fàbrega, M.S. Moreolo, L. Nadal, S. Spadaro, "Filter Features Extraction from Optical Spectra", European Conference on Optical Communications (ECOC), 2020       

[C5]      A. Mahajan, K. Christodoulopoulos, R. Martínez, S. Spadaro, R. Muñoz, "Modelling Multi-Vendor Transponders Performance and Optimizing Launch Power”, European Conference on Optical Communications (ECOC), 2020

[C6]      A. Mahajan, K. Christodoulopoulos, R. Martinez, S. Spadaro, R. Munoz, "Improving QoT Estimation Accuracy with DGE Monitoring using Machine Learning", International Conference on Optical Network Design and Modeling (ONDM), 2020

[C7]      F. Locatelli, K. Christodoulopoulos, J.M. Fàbrega, M.S. Moreolo, L. Nadal, S. Spadaro, "Experimental Demonstration of a Machine Learning-Based in-band OSNR Estimator from Optical Spectra", International Conference on Optical Network Design and Modeling (ONDM), 2020

[C8]      K. Christodoulopoulos, W. Lautenschlaeger, F. Frick, N. Benzaoui, T. Henke, U. Gebhard, L. Dembeck, A. Lechler, Y. Pointurier, S. Bigo, "Enabling the Scalability of Industrial Networks by Independent Scheduling Domains", Optical Fiber Communications Conference (OFC), 2020

[C9]      A. Mahajan, K. Christodoulopoulos, R. Martinez, S. Spadaro, R. Munoz, "Modeling Filtering Penalties in ROADM-based Networks with Machine Learning for QoT Estimation", Optical Fiber Communications Conference (OFC), 2020

 

A full list of publications can be found here

 

Teaching

Communications Networks II, Department of Informatics and Telecommunications, University of Athens

 

Free time